Stackable storage element



FIG. 1 is a front and side perspective view of a first embodiment of a stackable storage element showing my new design, it being understood that the perspective view from the opposite side is a mirror image thereof;

FIG. 2 is a front elevational view of the embodiment of FIG. 1;

FIG. 3 is a view similar to FIG. 1, but showing a second embodiment thereof;

FIG. 4 is a front elevational view of the embodiment of FIG. 3; and,

FIG. 5 is a side elevational view of FIG. 4 from the left, the side elevational view from the right being a mirror image thereof. 

The ornamental design for a stackable storage element, as shown and described. 